mmc: card: block.c cleanup for host claim/release.

Move host claim/release into mmc_blk_issue_rq.

(This is helpful so that selecting partition only has to happen
in one place for these commands.)

Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 13 insertions, 18 deletions

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 91a67677360..3e9082b729f 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -273,8 +273,6 @@ static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
         unsigned int from, nr, arg;
         int err = 0;
 
-        mmc_claim_host(card->host);
-
         if (!mmc_can_erase(card)) {
                 err = -EOPNOTSUPP;
                 goto out;
@@ -294,8 +292,6 @@ out:
         __blk_end_request(req, err, blk_rq_bytes(req));
         spin_unlock_irq(&md->lock);
 
-        mmc_release_host(card->host);
-
         return err ? 0 : 1;
 }
 
@@ -307,8 +303,6 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
         unsigned int from, nr, arg;
         int err = 0;
 
-        mmc_claim_host(card->host);
-
         if (!mmc_can_secure_erase_trim(card)) {
                 err = -EOPNOTSUPP;
                 goto out;
@@ -330,8 +324,6 @@ out:
         __blk_end_request(req, err, blk_rq_bytes(req));
         spin_unlock_irq(&md->lock);
 
-        mmc_release_host(card->host);
-
         return err ? 0 : 1;
 }
 
@@ -402,8 +394,6 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
                 (rq_data_dir(req) == WRITE) &&
                 REL_WRITES_SUPPORTED(card);
 
-        mmc_claim_host(card->host);
-
         do {
                 struct mmc_command cmd;
                 u32 readcmd, writecmd, status = 0;
@@ -589,8 +579,6 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
                 spin_unlock_irq(&md->lock);
         } while (ret);
 
-        mmc_release_host(card->host);
-
         return 1;
 
  cmd_err:
@@ -617,8 +605,6 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
                 spin_unlock_irq(&md->lock);
         }
 
-        mmc_release_host(card->host);
-
         spin_lock_irq(&md->lock);
         while (ret)
                 ret = __blk_end_request(req, -EIO, blk_rq_cur_bytes(req));
@@ -629,16 +615,25 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
 
 static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 {
+        int ret;
+        struct mmc_blk_data *md = mq->data;
+        struct mmc_card *card = md->queue.card;
+
+        mmc_claim_host(card->host);
+
         if (req->cmd_flags & REQ_DISCARD) {
                 if (req->cmd_flags & REQ_SECURE)
-                        return mmc_blk_issue_secdiscard_rq(mq, req);
+                        ret = mmc_blk_issue_secdiscard_rq(mq, req);
                 else
-                        return mmc_blk_issue_discard_rq(mq, req);
+                        ret = mmc_blk_issue_discard_rq(mq, req);
         } else if (req->cmd_flags & REQ_FLUSH) {
-                return mmc_blk_issue_flush(mq, req);
+                ret = mmc_blk_issue_flush(mq, req);
         } else {
-                return mmc_blk_issue_rw_rq(mq, req);
+                ret = mmc_blk_issue_rw_rq(mq, req);
         }
+
+        mmc_release_host(card->host);
+        return ret;
 }
 
 static inline int mmc_blk_readonly(struct mmc_card *card)